What information could I derive from sequencing my genome?

physical (and mental) aptitude are very complex traits. They are controlled by hundreds, or maybe thousands of genes.

we're a long way off measuring these types of things genetically and I think that its a technology that will probably never be developed.

I think that our heuristic methods will become so powerful that we will never need to.

So using current technology and knowledge we can already draw inferences about you through the use of genome wide association studies.

here is a link for all of the disease that have been mapped using linkage.

genome.gov/multimedia/illustrations/GWAS_2010_4.pdf (add the www.)

I remember reading about non diseased phenotypes that had been mapped as well (eg whether you're a night owl or an early bird) but I can find a link.

so to answer your question, using linkage mapping we could say what sports you are probably more suited for. We could say that you had a 80% chance of being an above average runner.

As for what your theoretical top speed was, that would be more down to training and environment, not genetics.

Theoretically, you can.

You will be able to find out anything about yourself that is genetically determined, for instance, eye colour.

If you want to know the sport you're suited for, you might look at genes coding for your body structure, for example.

However, in the real world, I am pretty sure biologists haven't find the alleles for such traits.